* modules/sys_time (Makefile.am): Build sys/time.h only when it's the

* modules/sys_time (Makefile.am): Build sys/time.h only when it's the
value of $(SYS_TIME_H).
[MOSTLYCLEANFILES]: Now that sys/time.h is created only when needed,
remove it conditionally, too.
* m4/sys_time_h.m4 (gl_HEADER_SYS_TIME_H_BODY): Set SYS_TIME_H.
* m4/gettimeofday.m4 (gl_FUNC_GETTIMEOFDAY):
(gl_FUNC_GETTIMEOFDAY_CLOBBER): Set SYS_TIME_H when setting
GETTIMEOFDAY_REPLACEMENT to 1.

2007-01-28  Bruno Haible  <bruno@clisp.org>